Violin Installation Guide April 2008 (Ver. 2.3) www.elmomc.
Important Notice This guide is delivered subject to the following conditions and restrictions: This guide contains proprietary information belonging to Elmo Motion Control Ltd. Such information is supplied solely for the purpose of assisting users of the Violin servo amplifier. The text and graphics included in this manual are for the purpose of illustration and reference only. The specifications on which they are based are subject to change without notice.
Violin Installation Guide Contents MAN-VIOIG (Ver. 2.3) Contents Chapter 1: Safety Information ............................................................................................... 1-1 1.1 Warnings ......................................................................................................................... 1-2 1.2 Cautions .......................................................................................................................... 1-2 1.3 Conformance to Standards.......
Violin Installation Guide MAN-VIOIG (Ver. 2.3) Chapter 1: Safety Information In order to achieve the optimum, safe operation of the Violin servo amplifier, it is imperative that you implement the safety procedures included in this user guide. This information is provided to protect you and to keep your work area safe when operating the Violin and accompanying equipment. Read this chapter carefully before you begin the installation process. Ensure that all system components are connected to earth ground.
Violin Installation Guide Safety Information MAN-VIOIG (Ver. 2.3) 1.1 Warnings Cleaning after soldering To avoid the damage of the product's acrylic coating the Violin must not be cleaned after soldering by dissolving solvents and /or "water" cleaning process. For more details: http://www.elmomc.com/applications/article/Soldering-andCleaning_Application-Note.
Violin Installation Guide Safety Information MAN-VIOIG (Ver. 2.3) According to Annex III of Article 13 of Council Directive 93/68/EEC, amending Council Directive 73/23/EEC concerning electrical equipment designed for use within certain voltage limits, the Violin meets the provisions outlined in Council Directive 73/23/EEC. The party responsible for ensuring that the equipment meet the limits required by EMC regulations is the manufacturer of the end product. 1.
Violin Installation Guide MAN-VIOIG (Ver. 2.3) Chapter 2: Introduction This user guide is intended for the design engineer who is integrating an Elmo Motion Control Violin servo amplifier into a machine. 2.1 Product Description The Violin series of miniature servo amplifiers for DC brush motors incorporates custom mixed analog/digital ICs and a hybrid power stage. The basic configuration is a current mode amplifier targeting the OEM market. As such, no trimmers are used in the basic version.
Violin Installation Guide Introduction MAN-VIOIG (Ver. 2.
Violin Installation Guide Introduction MAN-VIOIG (Ver. 2.3) 2.4 How to Use this Guide Installation is the first step in integrating and operating the Elmo Violin servo amplifier. After carefully reading the safety instructions in the first chapter, the following chapters provide you with installation instructions as follows: Chapter 3, Installation, provides step-by-step instructions for unpacking, mounting and connecting the Violin.
Violin Installation Guide 3-1 MAN-VIOIG (Ver. 2.3) Chapter 3: Installation 3.1 Site Requirements You can guarantee the safe operation of the Violin by ensuring that it is installed in an appropriate environment. Feature Value Ambient operating temperature 0 °C – 50 °C (32 °F – 122 °F) Maximum case temperature 87 °C (188° F) Note: Models for extended environmental conditions are available. 3.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) 3.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) 3.4 Mounting the Violin 3.4.1 Mounting the Heatsink The Violin dissipates its heat by natural convection, up to loads of 500 W. For higher output loads, the amplifier should be mounted on an additional heatsink or cooled by fan. There are two 4.5 mm holes in the base plate for mounting an additional heatsink (see Figure 3-1). 3.4.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) 3.5 Wiring the Violin Motion Controller See remark below CREF+ CREFController's common CMRET Power wires twisted and shielded A M1 Motor B Chassis M2 VIO Isolating transformer (-) Power Supply (+) PR, Power Return (-) Vp+ Heatsink The controller common must be connected to the CMRET whenever the common mode difference is over 6V. Figure 3-2: Basic Wiring 3.6 Connections 3.6.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) Pin Function Remarks VP+ Positive power input PR M1 Power input return Motor power output 1 M2 Motor power output 2 Output is positive when pin J1/1 is positive relative to pin J1/2. Table 3-3: Violin Power Connections Pin #/ Short Form 1 CREF+ Function Remarks Current command Positive input of a differential amplifier: input ( + ) Input operating voltage range: ±3.75 V Maximum input voltage: ±20 V (see section 4.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) Pin #/ Short Form Function 1 Latch mode return Return for Latch mode (LM) Remarks LMRET 2 Latch mode Latch mode input Enable (+) Positive voltage input of the "Amplifier Enable” function. To enable operation of the amplifier, the opto must be switched on by applying voltage between this pin (+) and pin J2/4 (-). The opto is isolated from the amplifier. See Figure 2-1. LM 3 EN+ Minimum “ON” voltage: 3 V , current consumption 0.6 mA.
Violin Installation Guide Installation MAN-VIOIG (Ver. 2.3) 3.6.2 Connecting a Non-isolated Violin to an Isolating Power Transformer Be sure to ground: DC power common Motor chassis Amplifier heatsink Do not ground the control common, which is internally connected to the power common. Grounding the control common will create a ground loop. 3.7 DC Power Supply The DC power supply can be at any voltage in the range defined in the technical specifications (Appendix of this guide).
Violin Installation Guide 4-1 MAN-VIOIG (Ver. 2.3) Chapter 4: Servo Control Operation 4.1 Current Command Input The Violin has a single differential input. The input operating voltage range is ± 3.75 V, meaning that a 3.75 V signal will result in a fully rated peak current. The current limit circuits will override this signal if the peak duration exceeds 2.7 seconds and/or the required current exceeds the values set by the ECLC and ECLP signals. If the input command voltage exceeds 3.
Violin Installation Guide Servo Control Operation MAN-VIOIG (Ver. 2.3) 4.3 Current Gain Control (CGC) The Violin amplifier is equipped with Current Gain Control (CGC) for improved performance of low induction motors. Connecting pin J1/8 to J1/9 reduces the gain of the current loop, thus enabling the use of low inductance motors without the insertion of an additional inductor. The default (pin J1/8 left open) is high gain.
Violin Installation Guide Servo Control Operation MAN-VIOIG (Ver. 2.3) 4.4 External Current Limit - Continuous (ECLC) The continuous current limit of the Violin amplifier can be scaled down by an external voltage or by an external resistor connected from pin J1/3 (ECLC) to pin J1/5 (ECLRET). 4.4.1 External Voltage An external positive voltage (0 to 3.75 V) to terminal J1/3 (ECLC) in reference to terminal J1/5 (ECLRET) will control the continuous current limit from zero to Ic(nom).
Violin Installation Guide Servo Control Operation MAN-VIOIG (Ver. 2.3) 4.5.2 External Resistor Connect an external resistor between terminal J1/4 (ECLP) and terminal J1/5 (ECLRET). The resistor value is given by: RECLP (Kohm) = 37.4 * Ip(new) Ip(nom) -1 0 < RECLP < 36.4 K (1/8 Watt) At RECLP greater than 36.4 K, the current limit will be internally clamped to the nominal value. IP(nom) is the nominal peak current limit of the amplifier. 4.
Violin Installation Guide Servo Control Operation MAN-VIOIG (Ver. 2.3) 4.8 4-5 Status Indications The following table lists the Violin amplifier status indications.
Violin Installation Guide A-1 MAN-VIOIG (Ver. 2.3) Appendix: Technical Specifications Feature Units Minimum supply voltage VDC 10 20 40 Nominal supply voltage VDC 50 85 170 Maximum supply voltage VDC 59 95 195 Maximum continuous power output W Efficiency at rated power (at nominal conditions) % 290 570 860 1400 15/200 10/200 6/200 20/100 15/100 10/100 25/60 15/60 10/60 5/60 A.
Violin Installation Guide A-2 MAN-VIOIG (Ver. 2.3) A.3 Mechanical Specifications Feature Details Size 82 x 47 x 25.4 mm (3.228 x 1.850 x 1.000 in) Weight 0.18 kg (6.4 oz) Power pin material Brass with tin plating Power pin size 1.14 mm (0.45 in) square Power pin PCB layout 1.8 ± 0.05 mm (0.071 ± 0.002 in) Signal pin (J1, J2) material Phosphor bronze with 10µ gold plating Signal pin (J1, J2) size 0.5 ± 0.1 mm (0.02 ± 0.004 in) square Signal pin (J1, J2) PCB layout 1 ± 0.05 mm (0.04 ± 0.
